A new wiring harness connector

Abstract

The utility model provides a novel wiring harness connector, including the plug main part, the plug mouth inside integrative setting of plug main part is provided with two symmetrical plug terminal, the inside sealing disc is elastically slid and installed through the spring in plug mouth, the inside sealing disc and outside sealing disc all are equipped with the pin hole through, the connecting sliding block of outside sealing disc upper and lower settings slides through the slide groove of plug mouth through -equipped and is connected with its outside sliding installation sealing slide cylinder, the connector main part integrative setting resistance seat and connector mouth, the connector mouth allows inserting into the plug mouth, and the inside sealing disc is provided with the interface terminal corresponding with plug terminal in the connector mouth, the utility model discloses initial state, the inside sealing disc and outside sealing disc pin hole are not connected, and spring pre -tension makes two people to stick together, and the plug mouth is blocked, prevents the impurity from entering. When the plug is connected, the sealing slide cylinder is rotated, the outside sealing disc is rotated 90 DEG, the pin hole is aligned, the slide groove guides its movement, and the terminal is butt joint accurate. The sealing screw sleeve locking forms secondary sealing, and the reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and in particular relates to a novel wire harness connector. Background Technology

[0002] As a core component of electrical connection systems, wire harness connectors are widely used in automobiles, electronic equipment, industrial machinery, aerospace, and other fields. Their reliability directly affects the stability of the circuit system. Existing wire harness connectors typically consist of a plug and a socket, with power or signal transmission achieved through the mating of the plug terminals and the interface terminals. However, traditional wire harness connectors have significant structural design flaws: in their initial unplugged state, the plug and socket are open, lacking an effective sealing and protective structure. This allows external liquids (such as rainwater and oil), dust, and sediment to easily enter the plug and adhere to the plug or interface terminals, causing oxidation, increased contact resistance, and even short circuits. These problems are particularly pronounced in humid, dusty, or vibrating environments, severely impacting the lifespan of the wire harness connector and the safety of the circuit system.

[0003] Currently, while some wire harness connectors have simple dust covers or sealing rings, these structures often require additional installation steps, and their sealing effectiveness depends on the standardization of manual operation, making it difficult to provide long-term reliable protection. Furthermore, during the insertion process of traditional connectors, the terminals are directly exposed to the external environment, and impurities may still enter the connection area at the moment of insertion, leading to poor contact.

[0004] Therefore, it is essential to invent a new type of wire harness connector. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a novel wire harness connector, including a plug body, a plug opening, plug terminals, an inner sealing disc, a spring, an outer sealing disc, a pin hole, a connecting slider, a groove, a sealing cylinder, a connector body, a stop seat, a connector opening, an interface terminal, and a sealing screw sleeve. The plug body has two symmetrical plug terminals integrally formed in the plug opening. The inner sealing disc is elastically and slidably mounted inside the plug opening via a spring. Both the inner and outer sealing discs have through-holes. The connecting slider, positioned vertically on the outer sealing disc, slides through the groove formed in the plug opening and connects to the sealing cylinder slidably mounted outside it. The connector body has an integrally formed stop seat and a connector opening, allowing insertion into the plug opening. The connector opening has an interface terminal corresponding to the plug terminals inside. The sealing screw sleeve is slidably fitted onto the connector body.

[0006] Preferably, the spring is located between two symmetrically arranged plug terminals, the inner sealing plate is located in front of the two plug terminals, and the pin hole through the inner sealing plate corresponds to the plug terminals.

[0007] Preferably, the pin hole through the inner sealing disc and the pin hole through the outer sealing disc are rotationally mirror images of each other. After the outer sealing disc is rotated 90 degrees, the center lines of the pin holes and plug terminals of both are on the same horizontal line.

[0008] Preferably, the connecting sliders arranged above and below the outer sealing disc allow movement along the two grooves that are opened through the plug opening. The grooves are composite grooves composed of arc-shaped grooves and horizontal grooves. The connecting sliders allow a 90-degree rotation along the arc-shaped grooves of the grooves and a linear reciprocating motion along the horizontal grooves of the grooves.

[0009] Preferably, the outer sealing disc, connecting slider, and sealing cylinder are integrally arranged together, the sealing cylinder is slidably sleeved outside the plug opening, and the outer surface of the sealing cylinder is provided with threads that mesh with the sealing screw sleeve.

[0010] Preferably, the sealing threaded sleeve allows for a combination of rotational and reciprocating linear motion on the joint body.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In its initial active sealing protection state, the pin holes of the inner and outer sealing discs are not connected. The outer sealing disc is tightly fitted to the inner sealing disc by spring force, completely sealing the internal space of the plug and preventing external liquids, dust, and other impurities from entering the plug terminal area. The preload provided by the spring ensures that there is no gap between the inner and outer sealing discs, forming a physical barrier. Even in vibration or tilting environments, it can maintain a good sealing effect, fundamentally preventing the terminals from oxidizing or becoming contaminated due to long-term exposure.

[0013] This invention utilizes a rotating sealing slide to rotate the outer sealing disc 90°, aligning and connecting the pin holes of the inner and outer sealing discs, thus providing a channel for the mating of the plug terminals and interface terminals. The arc-shaped groove of the slide design, in conjunction with the horizontal groove, enables the orderly switching between the rotational and linear motion of the outer sealing disc: during the rotational phase, the pin holes are aligned; during the linear motion phase, as the connector is inserted, the inner and outer sealing discs are pushed backward by compressing the springs, ensuring precise mating of the terminals along the pin hole axis during insertion, preventing misalignment or jamming. Simultaneously, the spring's rebound force compensates for the insertion gap, improving contact reliability.

[0014] This invention creates a secondary seal after insertion, further enhancing the overall waterproof and dustproof performance of the connector, making it suitable for harsh environments such as high humidity and high dust levels. Simultaneously, the rotating locking action of the sealing nut effectively resists loosening caused by vibration, improving the mechanical stability of the connector and preventing circuit failures due to connection failure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a half-sectional structural diagram of the present invention.

[0017] Figure 3 This is a partial cross-sectional structural diagram of the plug body of this utility model.

[0018] Figure 4 This is an exploded structural diagram of the plug body of this utility model.

[0019] In the picture:

[0020] Plug body 1, plug port 2, plug terminal 3, inner sealing plate 4, spring 5, outer sealing plate 6, pin hole 7, connecting slider 8, slide groove 9, sealing slide cylinder 10, connector body 11, stop seat 12, connector port 13, interface terminal 14, sealing screw sleeve 15. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a novel wire harness connector, comprising a plug body 1, a plug opening 2, a plug terminal 3, an inner sealing disc 4, a spring 5, an outer sealing disc 6, a pin hole 7, a connecting slider 8, a groove 9, a sealing cylinder 10, a connector body 11, a stop seat 12, a connector opening 13, an interface terminal 14, and a sealing screw sleeve 15. The plug opening 2 integrally formed on the plug body 1 contains two symmetrical plug terminals 3. The inner sealing disc 4 is elastically and slidably mounted inside the plug opening 2 via the spring 5. Both the inner sealing disc 4 and the outer sealing disc 6 have through pin holes 7. The connecting slider 8, vertically arranged on the outer sealing disc 6, slides through the groove 9 formed by the through opening in the plug opening 2 and connects to the sealing cylinder 10 slidably mounted outside it. The connector body 11 integrally forms a stop seat 12 and a connector opening 13, allowing insertion into the plug opening 2. The connector opening 13 contains an interface terminal 14 corresponding to the plug terminal 3. The sealing screw sleeve 15 is slidably fitted onto the connector body 11.

[0025] Furthermore, the spring 5 is made of stainless steel or copper alloy and is cylindrical and spiral-shaped. Its two ends abut against the limiting boss inside the plug body 1 and the rear end face of the inner sealing plate 4, respectively, and are symmetrically installed in the hollow area between the two plug terminals 3. The plug terminal 3 is made of tin-plated brass and has an L-shaped structure. Its tail is connected to the wire harness conductor by a crimping process, and its head extends towards the plug opening 2 and is located behind the inner sealing plate 4. The inner sealing plate 4 is made of polycarbonate or engineering plastic injection molding and is disc-shaped. It is located directly in front of the two plug terminals 3, and its central axis coincides with the axis of the plug opening 2. Two pin holes 7 are drilled through the inner sealing plate 4, corresponding one-to-one with the plug terminals 3. The diameter of the pin hole 7 is 1.5 mm larger than the diameter of the head of the plug terminal 3 and 0.5 mm larger than the diameter of the head of the interface terminal 14, ensuring that the terminal head can pass freely and form a clearance fit. The axis of the pin hole 7 of the inner sealing plate 4 is completely aligned with the center line of the plug terminal 3.

[0026] Furthermore, the pin holes 7 of the inner sealing disc 4 are horizontally symmetrically distributed (in the initial state, the line connecting the centers of the holes is parallel to the horizontal plane), while the pin holes 7 of the outer sealing disc 6 adopt a rotational mirror design, that is, in the initial state, the line connecting the centers of the holes is perpendicular to the horizontal plane, forming a 90° rotational symmetry relationship. The outer sealing disc 6 is also made of polycarbonate material, with the same thickness as the inner sealing disc 4, and the diameter and depth of its pin holes 7 are exactly the same as those of the inner sealing disc 4. When the outer sealing disc 6 is rotated 90° clockwise, the axes of the pin holes 7 of both are precisely aligned and are on the same horizontal straight line as the center line of the plug terminal 3. At this time, the pin holes 7 form a through channel, allowing the plug terminal 3 and the interface terminal 14 in the connector body 11 to achieve electrical connection through the pin holes 7. This design ensures the pin hole alignment accuracy through the geometric mirror principle, avoiding frictional damage between the terminal and the edge of the pin hole during insertion.

[0027] Furthermore, connecting sliders 8 are vertically fixed to the upper and lower end faces of the outer sealing disc 6, respectively. The sliders 8 are made of the same engineering plastic material as the outer sealing disc 6. Two symmetrical grooves 9 are correspondingly formed on the outer wall of the plug port 2. Each groove 9 consists of an upper arc-shaped groove (central angle 90°, radius matching the rotation radius of the outer sealing disc 6) and a lower horizontal groove, processed using a one-piece molding process, resulting in a smooth, burr-free surface. The longitudinal section of the connecting slider 8 is rectangular, forming a 0.2mm clearance fit with the width of the groove 9, ensuring that the slider can rotate 90° along the arc-shaped groove and, after rotating to the desired position, can reciprocate linearly along the horizontal groove. The starting position of the arc-shaped groove corresponds to the initial sealing state of the outer sealing disc 6 (pin holes 7 vertically distributed), and the ending position corresponds to the horizontal alignment of the pin holes 7. The horizontal groove is parallel to the axis of the plug port 2, guiding the outer sealing disc 6 to move axially during insertion.

[0028] Furthermore, the outer sealing disc 6, connecting slider 8, and sealing cylinder 10 are manufactured using an integrated injection molding process. The sealing cylinder 10 is fitted onto the outside of the plug port 2, with its inner diameter being 0.1 mm larger than the outer diameter of the plug port 2, forming a sliding fit. The outer surface of the sealing cylinder 10 is machined with an M12×1.5 external thread, which meshes with the internal thread of the sealing thread sleeve 15. The thread accuracy meets the 6g grade in GB / T197-2003, ensuring sealing performance and reliability during locking. This integrated structure, through the cooperation of the connecting slider 8 and the slide groove 9, converts the rotational motion of the sealing cylinder 10 into the rotational and linear motion of the outer sealing disc 6, thereby achieving the opening and closing control and insertion guidance of the pin hole 7.

[0029] Furthermore, the sealing sleeve 15 is made of zinc alloy or aluminum alloy, with one end having an inner diameter 1mm larger than the outer diameter of the connector body 11, forming a sliding fit. This allows it to rotate on the connector body 11 while simultaneously sliding back and forth along the axial direction. An annular limiting boss is machined on the outer wall of the middle section of the connector body 11 to limit the axial movement range of the sealing sleeve 15. The external thread section on its outer side matches the external thread specification of the sealing slide 10, ensuring uniform force distribution during engagement. The inner wall of the sealing sleeve 15 also has an O-ring mounting groove. During assembly, a nitrile rubber sealing ring is embedded, forming an end-face seal with the end face of the plug body 1. This, combined with the threaded seal of the sealing slide 10, achieves a double waterproof and dustproof effect. After insertion, the sealing sleeve 15 is rotated to fully engage with the sealing slide 10. The thread preload tightly connects the plug body 1 and the connector body 11, while simultaneously compressing the sealing ring to form a sealing surface.

[0030] The working principle is as follows: First, in the initial state (when not plugged in), the pin hole 7 of the outer sealing plate 6 and the pin hole 7 of the inner sealing plate 4 are rotated and misaligned by 90° (the pin holes 7 of the inner sealing plate 4 are horizontally distributed, and the pin holes 7 of the outer sealing plate 6 are vertically distributed). The spring 5 is in a naturally extended state, which pushes the inner sealing plate 4 forward and presses it against the rear end face of the outer sealing plate 6 to form a double sealing barrier, completely sealing the internal space of the plug port 2 and preventing external liquids and dust from entering and contacting the plug terminal 3.

[0031] Secondly, when insertion is required, manually rotate the sealing slide cylinder 10 (because the outer sealing disc 6, the connecting slider 8 and the sealing slide cylinder 10 are an integral structure). The connecting slider 8 rotates 90° clockwise along the groove 9 (arc-shaped groove section) on the outer wall of the plug port 2, driving the outer sealing disc 6 to rotate synchronously until the pin hole 7 of the outer sealing disc 6 and the pin hole 7 of the inner sealing disc 4 are completely aligned (both are horizontally distributed). At this time, the pin hole 7 forms a through channel, providing a path for the docking of the plug terminal 3 and the interface terminal 14.

[0032] Then, the connector port 13 of the connector body 11 is aligned with the plug port 2 and inserted. The front end of the connector port 13 abuts against the outer sealing plate 6 and pushes it to move backward. The connecting slider 8 then slides in a straight line along the slide groove 9 (horizontal groove section) towards the plug body 1. The outer sealing plate 6 drives the inner sealing plate 4 to move backward synchronously through the contact force and compresses the spring 5 (the spring 5 accumulates elastic potential energy) until the head of the plug terminal 3 passes through the pin hole 7 of the inner sealing plate 4 and the outer sealing plate 6, contacts the interface terminal 14 in the connector port 13 and completes the electrical connection.

[0033] Finally, the sealing sleeve 15, which is fitted on the connector body 11, is rotated so that it slides along the axial direction of the connector body 11 and engages with the thread on the outer surface of the sealing slide cylinder 10. As the sealing sleeve 15 is rotated and locked, the O-ring on its inner wall is compressed and tightly fits the end face of the plug body 1. At the same time, the thread preload force fixes the plug body 1 and the connector body 11 into one unit, forming a double seal (thread seal + end face seal), ensuring that the wire harness connector has reliable waterproof and dustproof performance after connection.

[0034] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A novel wire harness connector, characterized in that, The plug body includes a plug body (1), a plug opening (2), plug terminals (3), an inner sealing disc (4), a spring (5), an outer sealing disc (6), a pin hole (7), a connecting slider (8), a slide groove (9), a sealing slide cylinder (10), a connector body (11), a stop seat (12), a connector opening (13), an interface terminal (14), and a sealing screw sleeve (15). The plug body (1) has two symmetrical plug terminals (3) integrated into the plug opening (2). The inner sealing disc (4) is elastically slidably mounted inside the plug opening (2) via a spring (5). 4) and the outer sealing disc (6) are both provided with pin holes (7). The connecting slider (8) provided on the upper and lower parts of the outer sealing disc (6) slides through the groove (9) provided through the plug port (2) and is connected to the sealing cylinder (10) which is slidably installed on its exterior. The connector body (11) is provided with a stop seat (12) and a connector port (13). The connector port (13) allows insertion into the plug port (2). The connector port (13) is provided with an interface terminal (14) corresponding to the plug terminal (3) inside. The sealing screw sleeve (15) is slidably sleeved on the connector body (11).

2. The novel wire harness connector as described in claim 1, characterized in that: The spring (5) is located between two symmetrically arranged plug terminals (3), and the inner sealing plate (4) is located in front of the two plug terminals (3). The pin hole (7) through the inner sealing plate (4) corresponds to the plug terminal (3).

3. The novel wire harness connector as described in claim 2, characterized in that: The pin hole (7) through the inner sealing disc (4) and the pin hole (7) through the outer sealing disc (6) are rotationally mirror images of each other. After the outer sealing disc (6) is rotated 90 degrees, the center lines of the pin holes (7) and the plug terminal (3) of both are on the same horizontal line.

4. A novel wire harness connector as described in claim 3, characterized in that: The connecting slider (8) provided on the upper and lower sides of the outer sealing disc (6) allows movement along the two grooves (9) that are opened through the plug (2). The groove (9) is a composite groove composed of an arc groove and a horizontal groove. The connecting slider (8) allows to rotate 90 degrees along the arc groove of the groove (9) and allows to reciprocate in a straight line along the horizontal groove of the groove (9).

5. A novel wire harness connector as described in claim 4, characterized in that: The outer sealing disc (6), connecting slider (8) and sealing slide (10) are integrally set together. The sealing slide (10) is slidably sleeved outside the plug (2). The outer surface of the sealing slide (10) is provided with threads that mesh with the sealing screw sleeve (15).

6. A novel wire harness connector as described in claim 5, characterized in that: The sealing nut (15) allows for a combination of rotational and reciprocating linear motion on the connector body (11).

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